Cat Grass Plus - An easy way to grow grass in a container. Just open the lid, fill water in it once and watch it grow. It satisfies a cat's natural craving for grass. It contains one or more of the following seeds: barley, oats or wheat. The unique formula requires watering only once, and grows straight from the container. CatGrass Plus contains non-toxic ingredients to ensure optimal growth and green healthy grass. Helps a cat's natural digestive system and also acts as a natural hairball remedy.